Metal spinning apparatus



June 8, 1943. w SHERA 2,321,527

METAL SPINNING APPARATUS Filed Dec. 9, 1959 2 sheets-sheet 1 Will/l MMM Il ummm rivz:

NUN. 4, ,i2 y r r/ H6. l Jof//v IMS/MRA ATTO 5K5' June 8, 1943. J, w. SHERA 2,321,527

METAL SPINNING APPARATUS Filed Dec. 9, 1939 2 Sheets-Sheet 2 Hai 5 55 32 54 N l Patented June 8, 1943 PATENT OFFICE Jahn. ,"Slle" Shaker Heights, lli, ssigillf, by rnesrle assignments, to American Flange &

`ann ctiin'gzCo., Inc., New York, N. Y., a cor- Amiatinnneember 9, 1939, serial No. abends "Lifleime (C1. 11eimv The invention relates to metal spinning and more particularly 'toanf apparatus "for securing prefelablya sheet' metal collar to, and externally ofy a sheet "metalneck `projecting from a metal Wall of a metallic 'container'.

The C. T. Draper lParent No. 2,156,237511mvsl an integral threaded metallic container bung opening4 neck having a surroundingfianged'collar and this construction has heretofore been'm'ade by iirst pressing the anged collar'on the neck in a press and by then transferring the article to a spinner and spinning a flange `on the'neck to secure the flanged collarthereto," Y

The securing of such hangedA collar therefore requires two separate operations with intervening handling. Inthe manufactureof metallic containers a reduction in cQst, bytheelimination of any one or more operations, may result in a substantial relative saving.

It is ltherefore a principal object of the present invention to reduce thejcost of metallic container construction by eliminating onenoperation, ,and the handling incident thereto, involved insecuring av flanged collar to ann integralthreaded bung opening neck of the type generally shown in the Draper Patent No. 21,156,237, ,l l

It is a further object or the present invention to provide an improved .pressure spinning ytool for positively pressing a collar on a neck Avloyalternating yielding and Ypositive pressure anclsimultaneously` spinning an outturne'dn rlip or flange on the outer end of the neck to secure Ythe collar thereto- When a collar issecured to a jneck by two operations with intervening handling, the ,collar may become tilted or displaced from-propergpos ition on the neck after y'the pressing operation and during the interveninghanolling'sothatV a subsequent spinning operation may make an imperfect article. A g V It is therefore a further object of the present invention to provide an improvedpressure spinning tool for securing a collar toa neck, theoperation of which insures the proper or exact positioning of the collar on the neck when secured thereto.

It is a further object of the present invention to provide an improved I'pressure spinning tool for securing a collar to a neck including an external non-rotating pressure sleeve fortelescoping the collar over the'neck and spinning means disposed within vthe sleevefor spinning the upstanding neck outwardly at its upper edge vover the colla-r. Y

A further object of the present Vinvention is to provide an improved pressure `spinning tool of the character rand for the purpose"just-'described having a plurality 'of spinning rollers whose axes are parallel to the axis of the sleeve whereby the spinning rollers may be readily mounted in the conned space with a vminimum deection or tilting thereof during operation 'i Moreoverjit is an object-'of vthe `present'invention to lprovide an improved "pressurefspinning tool of the character'and fof thepurpose 'just described having a pilot in advancegofgboththe pressure and spinning meansjforfcenteringthe pressing tool as it completes :its Operation-and for guiding the entry ofthe spinning-'means into the'necko Moreovenit is an dobject of'` thepresent invention to provide an improved apparatus;for secur ing a flanged collar externallyfto athreaded'bung opening neck by a single machine operation, by iirst` yieldingly and thenpositively; pressingI a collar onto a neck, theY collar telescoping Iover the neck, then yieldingly -holding the` collaron the neck while simultaneously spinning a-lip on the neck overthe collar, and finally positively pressing the collar on the neck as the spinning is completed, f

A rArid nally, itis an object'of the ,present invention v-toprovide an improved apparatus' for securing a collar to a threaded bung 'opening neck which apparatus may be 'employed 'withgjany one of a numberof standard; types f'drillp'resses. The above andnotherfobjects. maybeobtained by the Aimproved apparatus, ,eleiiiefntsy` parts; combinations Land vccjnlstructions which constitute. the prsent' inventh, a. preferred 'embodiment of whichjis jshownkinmthe drawin'gsjandjis hrenafterclaimed and. described;ir1detai1,;may be statedin general `terms, as including Vin a pres-V sure spinning tool, apress'ure 'sleeve'vholderremovably secured to or formed as, an integra'lpart similar mahineitoolinressure. 'Sleeveqm'eerls rionrotatably Slidahlv mounted Qnthe rireSSilre' Sleeve holder, adjustable meanslimiting relative :movement in eachdirectipn between j the pressure sleeve holderand thefpressufres'le'eve rnea'n'sfcm'f pression springs or Aother "yielding means normally holding the pressure sleeve means in an extended position, a preferably annular' pressure 'foot' formed 'as a part of or attached lto "the extended end of the pressure sleeve means; a spinning head reirn'c'ivably n'iountedon or formed asV a part of tnejjr'dtjatabie mahine tooispindie; apiprauty of spinning rolls inontedon saidspinning head within said pressure lsilt-reve means",the axesbf the' spinning rolls "prfiably'bein'gv *parallel to the axis of the"spindle and the working'surf'aces of the spinnngfrlls being located'"sub'sta'itially entirely withnlthe'opening 'deinedfbythe 'annuiar pressure foot and-being 'neriauy rrocated above thefek'tended position of t'he'pressre foot,

andprefe'rably'aj'cylindrical pilot :secured to the Spllrlg Ji'0116'Iltl'ica'ill'f Of the 'Spinning hea'anq pressure' 'foot lr1drma11y located 'in a position below the pressure foot a'nd'spinning rolls and preferably maintaining the spinning rolls assembled in the head.

`In the drawings- Figure 1 is an axial section through the improved pressure spinning tool in the position which the tool parts assume upon completing a collar seating and neck spinning operation;

Fig. 2 is a transverse section taken on the line 2-2, Fig. 1;

Fig. 3 is a fragmentary axial section taken on the line 3-3, Fig. 2, with the parts in the same position as in Fig. 1;

Fig. 4 is a bottom end view of the improved pressure spinning tool looking in the direction of the arrows 4-4,^Fig. 1 with the work removed, certain parts being broken away;

Fig. 5 is a view similar to Fig. 1, but showing the tool in a raised position with a collar located at the top of a neck preliminary to the operation of assembling;

Fig. 6 is an enlarged view of the collar and neck shown in Fig. 5; f

Fig. 'I is a view similar to Fig. 5 showing the pressure sleeve means engaged with the collar and exerting positive pressure thereon to telescope the collar over the neck; and

Fig. 8 is a view similar to Fig. 7, showing the collar fully telescoped over the neck and yieldingly held by the pressure sleeve at the time when the spinning head is about to commence the simultaneous spinning operation.

Similar numerals refer to similar parts throughout the various gures of the drawings.

The improved pressure spinning tool is generally indicated at 9 and includes a pressure sleeve .holder I0, which may be removably mounted Vvon ork formedas a part Vof the nonrotating Vquill II of a drill press or other similar machine tool. The pressure sleeve holder IIJ preferably has an outturned flange portion I2 and an elongated tubular portion I3.V A pressure sleeve I4 is slidably and non-rotatably mounted on the pressure sleeve holder IIJ and includes a flange portion I5, a preferably tubular portion I6 slidably mounted on portion I3, and an annular pressure foot I'I attached to or formed -as a part of the lower or extended end of the sleeve portion I6.

A series of bolts I8 and lock nuts I9 are adjustably secured to flange member I2 to form an adjustable stop limiting the upward movement of pressure sleeve I4 on sleeve holder I0 (Fig. 1); and a similar series of bolts 20 and lock nuts 2| are secured to flange I5 and pass through openings in flange I2 to provide adjustable stop means limiting downward movement of pressure sleeve I4 on sleeve holder I0, and to maintain pressure sleeve I4 non-rotatable (Fig. 3.)

If sleeve holder I is removably secured to quill II, one or more set screws 22` may be provided for assembling said elements. Spring or yielding means, preferably a plurality of compression springs 23, react between flanges I2 and I to normally urge the pressure sleeve I4 in the extended position indicated in Fig. 5.

The improved pressure spinning tool 9 also I 26 is provided with a plurality of apertures 2'I, in which spinning rolls 28 are journaled, preferably by radial needle be'arings 29 and thrust ball bearings 30.

As shown, the axes of the spinning rolls are parallel with the axis of the spinning head 24 and rotatable spindle and the curved out- 'wardly, downwardly presented Working surfaces Voil holes 36 in spinning head 24.

In the manufacture of metallic containers embodying the integral threaded sheet metal neck bung opening construction of the 4Draper Patent No. 2,156,237, it is sometimes desired to telescope a flanged collar over and secure it to the threaded neck. In Fig. 6, a sheet metal container wall is indicated at 31, having an integral neck 38' threaded at 39, terminating in an unthreaded upstanding portion 40; and the collar to be secured thereto -is indicated at 4I, having an outturned flange at 42 at its upper end and an outturned fillet flange 43 at its lower end.

After the neck 38 has been threaded, the outer diameter of portion 4U is vslightly larger than the outer diameters indicated at 44. On the other hand, the internal diameter of collar 4I adjacent flange 42, is slightly larger than the internal diameter thereof adjacent flange 43. Accordingly, in telescoping collar 4I over neck 38 for assembling the collar on the neck, a maximum resistance obtains during the first portion of the telescoping operation.

In assembling a collar 4I on neck 38 with the improved pressure spinning tool in one machine operation, sheet metal wall 3l is placed on a support plate 45 under pressure spinning tool III, and collar 4I is placed on top of neck 38, as shown in Fig'. 5. Machine tool quill II is then moved downward until pressure foot Il engages collar flange 42, whereupon continued downward movement of quill II causes pressure sleeve I5 to yieldingly move upward relative to sleeve holder I0, (due to the resistance to telescoping bea seated position, as shown in Fig. 8.

includes-a spinning head generally indicated at entirely within pressure sleeve I4; and holder 75 tween collar 4I and neck 38) until stop bolts IB engage flange I5, as shown in Fig. 7, whereupon continued downward movement of quill II positively presses collar 4I onto neck 38.

When the collar is approximately halfway telescoped over neck 33, the resistance to telescoping is so relieved that the pressure of springs 23 becomes greater and pressure sleeve I4 yieldingly moves downward to snap the collar 4I into Collar 4I is now yieldingly held by vpressure sleeve I4 in seated position and upon continued downward movement of quill II, spinning rolls 28 carried by rotating spinning head 24 engage upstanding neck portion 40, roller spin an outturned flange or lip 46 on the end of neck 38 over the upper end of collar 4I until the position of the parts shown in Fig. 1 is reached, when the operation is completed. A v At the completion of the operation, pressure sleeve I4 is again positively pressing collar 4I in seated position coincident with the simultaneous final spinning of outturned lip 66. Thus, collar 4l is accurately located with respect to neck 38 and tightly secured thereto by a single machine operation of the improved pressure spinning tool.

Meanwhile, pilot 32 guides and centers the pressure spinning tool while the collar is yieldingly pressed on the neck and during the spinning of lip 46, as Shown in Figs. 8 and l.

The improved manner of securing the ilanged collar il externally to the threaded bung opening neck 38 includes placing of collar t! on top of neck 38, as shown in Fig. 5, then rst yieldingly and thereafter positively pressing the collar 4l to telescope it downwardly over and seat it around collar 38, then yieldingly holding the collar 4i in seated position on the neck 3B while simultaneously spinning an outturned lip on flange ii from the upstanding collar portion 49, and iinally positively pressing the collar in accurately located seated position on the neck coincident with the simultaneous iinal spinning of the lip 46.

Accordingly, the improved pressure spinning tool, While providing for yieldingly pressing and holding the collar as the spinning operation progresses, also provides for positively pressing the collar onto the neck to insure the positioning of the collar sufficiently ahead of the beginning of spinning to prevent the spinning rolls from forcd opening neck; provides for positively seating and4 accurately positioning and securing a collar on the neck by a single machine operation by alternately yieldingly and positively pressing the collar and simultaneously spinning a collar securing flange on the neck; and provides apparatus for accomplishing the above and other results, which may be removably attached to any one of a number of standard types of drill presses or other similar machine tools, or may .be formed as an integral part of such machine tool.

In the foregoing description, certain terms have been used for brevity, clearness and understanding, but not unnecessary limitations are to be implied therefrom beyond the requirements of the prior art; because such words, in being used for desccriptive purposes and not for the purpose of limitation, are intended to be broadly construed.

Moreover, the invention is not limited to the exact structures shown herein, because the sizes of the various parts may be varied to provide other structural embodiments without departing from the scope of the present invention.

Having now described the features of the invention, the construction, manufacture and use of a preferred form of the improved apparatus and the advantages and results obtained by the use of the same; the new and useful inventions, constructions and devices, and reasonable mechanical equivalents thereof obvious to those skilled in the art, are set forth in the appended claims.

I claim:

l. In pressure spinning apparatus, a work support, a sleeve holder movable toward away from said support, an external pressure sleeve non-rotatably mounted on said holder and provided with an annular work engaging surface for engagement with the work on said support, rotatable spinning means carried by said holder and mounted within said pressure sleeve, said spinning means having spinning rolls with work engaging surfaces normally located above and spaced from said annular work engaging surface, means slidably and yieidably mounting said sleeve on said holder for simultaneous movement of said sleeve and spinning means downward toward said support permitting the work engaging surfaces of the spinning rolls to approach the plane of the annular work engaging surface of the sleeve, and means for positively downwardly moving the sleeve with the spinning means when a predetermined amount of approach has occurred.

2. In pressure spinning apparatus for telescoping a flanged collar over and securing it to a tubular neck, a support for a neck and for the collar to be telescoped thereover and secured thereto, a non-rotatable pressure sleeve for telescopically pressing said collar onto said neck, yieldable means acting against said sleeve to resist axial movement of said sleeve while said sleeve holds said collar in seated position on said neck, and rotatable spinning means mounted Within said pressure sleeve for spinning the upstanding neck outwardly over the collar While the collar is yieldingly held, said pressure sleeve being movable relative to said spinning means.

3. In pressure spinning apparatus, a work support, a pressure sleeve for engaging the work carried by said support, a pressure sleeve holder movable toward and away from said support, means for slidably and non-rotatably mounting said pressure sleeve on said holder, means yieldingly resisting movement of said sleeve with respect to holder, means on the holder for rigidly i abutting said sleeve after a predetermined amount of movement thereof with respect to said holder, rotatable spinning means carried by the holder and mounted within said pressure sleeve, and the sleeve mounting means including means for positioning the spinning means against the work following the movement of said sleeve against the work,

4. In pressure spinning apparatus, a work support, a pressure sleeve for engaging the Work carried by said support, a pressure sleeve holder movable toward and away from said support, means for non-rotatably and slidably mounting said sleeve on said holder, means yieldingly resisting the slidable movement of said sleeve on said holder, means on said holder for positively abutting said sleeve after a predetermined amount of movement thereof on said holder, rotatable spinning means carried by said holder and positioned within said pressure sleeve, a pilot on said spinning means for centering said sleeve and spinning means, and said sleeve mounting means including means for positioning the spinning means against the work following the movement of said sleeve against the work.

JOHN W. SHERA. 

